Improvement in middlings-bolts



G. S. CRNSONA Mddlngs-Bolts- Patented Nov. 19, 187,8.

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UNITED STATES PATENT OEEIoE.

GILES S. CHANSON7 OF. CLINTON7 NEW YORK.

IMPROVEMENT IN MAIDDLINGS-BOLTS.

Specification forming part of Letters Patent No. 210,102, dated November 19, 1878;

September 20, 1878.

application filed To all whom t may concern:

Be it known that I, GILES S. CHANSON, of Clinton7 in the county of Oneida, in the State of New York, have invented new and useful Improvements in Middlin gs- Puriers, of which the following, taken in connection with the acilour and middlin gs at one operation, and without the aid of suction or blast of air.

The invention is clearlyillustrated in the accompanying drawings, wherein Figure 1 is a front view of myimproved middlings-purier, with the front of the inclosing-chest removed to more fully show the construction and ar? rangement of the purifying bolt-reel, and the arrangement for separat-in g the various grades of ground substances. Fig. 2 is a transverse vertical section on line a: x in Fig. 1, and Fig. L; a transverse vertical section on line y y in Similar letters of reference indicate corresponding parts.

A represents a reel constructed, in the ordinary manner, of a shaft with radial arms or spokes, carrying on their ends longitudinalbars a a, to which the bolting-cloth is applied. That portion of the reel nearest the receiving end I cover with line graded bolting-cloth, commencing with about No. 9 at the end of the reel, and ending with about No. 14. This cloth I applyr to the exterior of the bars c, or outer periphery of the reel, as is customary with ordinary flour-bolts, so that by the inward-projecting bars a the ground substance may be caused to dash upon the bolting-cloth, and thus expel the flour through the meshes of the cloth. From the end of the aforesaid set of bolting-cloths to the discharge end of the reel `I employ coarser-graded boltingcloth, ranging from about No. 8 to 0, which I attach to the sides of the'bars a by cleats c, so as to bring the cloth flush with the inner face of the bar a, and thus form an unbroken boltingsurface. The contraction e of the inner periphery of the'bolt-reel at the junction of thetwo described sets of bolting-cloths forms a barrier to retard"the passage of the ground substance from the ne to the coarse set of bolting-cloths, and allows the flour to become completely expelled in the former. The residue, consisting of middlings of various grades and offal, passes onto the coarser set of bolting-oloths, where, by the unbroken interior surface ofthe reel, it receives a rolling motion,'which brings the bran, fluff, and other light impurities to the top of the rolling mass, and allows the middlings to freely escape through the meshes of the variouslygraded cloths. 'Ille bran and light impurities, being thus kept at the top, lnally pass out of the end of the reel. Beneath the reel is a spiral conveyer, B, constructed to convey from the middlin gs-purifyin g end to the our-boltin g A end of the reel, andin one direction throughout its length, and leading to the receptacle for the finished flour. At the junction of the two bolts the trough of the conveyer B is provided with aspout, b,leadingto another conveyer,C, which conveys its contents to the burrs, there to be reground. Directly under each of the other various grades of cloth the trough of the conveyer B is provided with a slide, by which it can be made to communicate with another conveyer, D, which leads to the reception end of thereel A. Under ordinary circumstances all the slides, except that at the junction of the middlingsbolt with the ilour-bolt, are closed. The iirst conveyer, B, then discharges all the middlings into the conveyer C, and conveys the iiour to the delivery-spout 'or its usual receptacle.

Should the dour near the Junction of the two bolts prove too specky to be mixed with the finished and merchantable flour, the slide at that point in the conveyer B is opened to allow the imperfect flour to fall into the conveyer D, by which it is carried to the reception end of the reel A, for the purpose of rebolting it. To prevent it from adhering to and clogging the bolting-cloth, one or more of the slides under the middlingsbolt are opened to allow aportion of the middlings to fall into the conveyer D, and thus intermix with the ilonr to be rebolted.

By attaching the bolting-'cloth to the sides of the supportingbars a by means of the cleats c,in the manner shownand described,thecloth can be put on in sections extending from bar to bar, thus obviating the necessity of remov..

its reception end graded lonr-bolting` cloth applied to the exterior of the bars a, and the remainder clothed with graded middlings-boltin g cloth, applied flush with theinsid e of bars a, and joined to the flour-bolting cloth, substantially as described.

In testimony whereof I have hereunto set my hand this 7th day of September, 1878.

GILES S. CRANSON.

Witnesses C. R. HOLMES, Jr., C. BENDIXEN. 

